Montier



(N0 Model.)

A. G. DU1VIONTIER & A. PLOURDE.

CHIP BRBAKER.

N0. 336,845. Patented Feb. 23, 1886.

N4 PETIZH& Plm'D-Lillmgmphur. Wn himuun. D. (L

NITED STATES ATENT OFFICE.

ALEXANDER C. DUMONTIER AND ARTHUR 1LOURDE, 01 DETRO1T, MICHE GAN, ASSIGNORS OF 'lHREE-FIFTHS T HENRY W. HARDING, ARTHUR DUMONTIER, AND WM. M. DWIGHT, OF SAME PLAGE.

CHlP-BREAKER.

SBECIPICAI'ION forming parl: of Letters Patent N0. 336,8k5, datecl February 23.1886.

Application file l September 16 1885. Serial N0. 177.275. (N0 model.l

T0 all wh0m 525 may c0ncern:

Be it known that we, ALEXANDER C. DU-

MONTIER and ARTHUR PLOURDE, of Detroit,

in the county of \Vayne and Stehe 0f Michigan, have invented new and useful Improvemenlss in Planing-Machine'Abtaehment-s; and we do hereby deelare thal: the following is a full, clear und exacl: description thereof, reference being had to the accompanying drawings, which forma parl: of this specilication.

Tnis invention relates t0 certaain new und useful improvements in bhe construction and operation of pressure-bars for planing-machines, such pressure-bars being provided 5 with chip-breaker attaehments.

The invenbion consists in the peculiar coustsruclsion and operation of lzheparts, by means 0f which the pressure-bar and its chip-breaker attachments are secured in aradial movemenb 1'rom a fixed point which is adjustable, and

by means of which Ehe point 0f the Chipbreaker is always brought, ab any poinbof l;he radial movernent, into the proper position t0 perl'orm its function. lf the pivotal point is 2 5 t00 high, t-he board being passed along the bed of the planer under the chip-breaker and pressure-bar has a tendeney, instead of raising the chip-breaker, t0 wedge it in the opposite direction; Lherefore our invention is designed 0 130 so enlarge such pivot-al poim: and the devices by which he chip-breaker is controlled that under 110 ciroumstances can the enteriug lumber wedge in against its upward molsion, am]. that in ilss radial movement the point; of

3 5 the chip-breaker will be presented concentric, o1 nearly so, so the cirole described by the revolving knives. v

Figure 1 is a plan of a section of a planer showing 0ur attachment. Fig. 2 is a verbical 0 longitudinal secbion onthe line x w in Fig. l. Fig. 3 is an enlarged detailed perspeebive 0f the various operating parts, and Fig. 4 is a diagram illustrating the operation 0f the Chipbreaker.

In lshe aceompanying drawings, A represents the bed of a planing-machine; and B, the head having cutters O attached thereto and supported upon a suitable mandrel running in proper boxes secured ab each side 0f the machine above the bed, and theseparts are of 0 the ordinary construction and operation.

D is a pressure-bar, Ehe office of which is 130 resb upon and hold down the board as it3 is advanced along the bed 0f the machine 110 the action of Ehe cutters 01 planers. This press ure-bar musls be vertically adj ustable, in order to suib Ehe various bhicknesses of lumber presenbed, and in various machinesil; issupported or attached in various manners. VVe prefer 130 so attach this pressure-barthat; 1'b may have a radial movemenb fromm a fixed poinb, which latterhowever may be adjusted as desired; und bhis end we will now describe nur method of supporting and adjusting thispressure bar, premising, however, that to this 6 pressure-bar Lhere 1's secured a f00b, E, whieh is eomxnonly called a chip-breaker, the office 0f which is readily explained by its technical name; hat; in order to effeetually perforn1 this function the point of the foob or breaker should always be in cl0se proximit-y to l;he periphery of the cirole described in bhe revolution of the planer-head with its knives, and as thicker or thinner lumber is presehted in the adjusting of the pressure-barwith its attachmenb, it's work autoxnacieally, the radial movement 0f the point of the chip= breaker should be concentric t0 the periphery of he eircle madeby the revolubion. In order '00 accomplish this we support the pressure- 8 bar,with its chip-board attachmenb, as follows: G are two arme, 150 the rear ends of which are secured the pressure-bar D, which in the drawings is represented as having a slot, a, wihin which is fitted the head b of Ehe chip- 8 5 brea.ker. The other ends of bhese arms are S101:- ted, as shown ab c, such slots engaging with Ehe stmd s d, projecting from the inner face 0f two circular 0r semieircular plataes, H, the periphery of which is V-shaped, as shown ab e, am]. 0 set-screws h are so arranged as lo allow bhese arms t0 be adjusted upon the SblldS d. I are two supports having slots m formed therein, by 1neans 0f which and suit-able bolts auch sbandards are secured t0 Ehe frame of tahe ma- 5 China, one on each side andvertically adjustable. 'Ihe top ends of these standards are formed in a circle or semicircle, as shown in Fig. 3, having formed therein a V-shaped channel, n, to fit tbe V-shaped periphery of the platze H. Above tl1e center 0f this standard, and upon the outer face thereof, projects a support, J frorn which projeets a pin or bearing, r,which is the axis upon whicl1 the plate H has a partiallyaotary motion, such bearing fitting in a suitable recess, s, in said plate.

In Fig. 4 a diagram is shown wherein bhe radial bars are shown as pivotally secured als a fixed point. Now if the pressure-barand its attached cl1ip-breaker are raised by ehe entering lumber, Ehe higher bhis rise the nearer the travel 0f the cut-ters does the poiut of the chip-br'eaker come, and a little more rise will bring it directly int0 such path 130 the (1estruction 0f the cnt ters as the radial movement would be eccentr'ic to the periphery of the circle described by such cutters. In dottecl lines above the radial arms are shown as pivotally secured ab a higher point b y means of which this difficulty would be partially overcorne; but the entering lumber Will now have a tendency to wedge the chip-breaker 01 drive ib forward slightly and prevenb its rising above the plane of uhe lumber. Our device overcornes all these difficulties; we geb the higher pivotal point needed 130 keep the point of tl1e ehip-breaker as it rises nearly eoncentrie wilah Ehe periphery of the circle described by the rot-ating cutt-erhead, and the adjustability of the plate H in be t0p of 11118 standard rotating abouts a fixed center enables us to accomplish the desired end.

What we elaim as our invention is 1. In a planing4nachine, the combinabion,

with arms having a radial movement from a fixed pivotal poinb, Which is also adjusbable, 0f a pressure-bar secured t0 said arms, and a chip-breaker carried by said presSure-bar, substantially as and for the purpose specified.

2. In aplaning-machine, circular or semi circular plates which have a rotary movemenb around a fixed pivotal point, arms secured at one end tosaid plates, a pressure-bar secured 120 the free ends of said arms, and a chipbreaker carried by said pressure-bar, substantially as described.

3. In a planing-machine, and in cornbinabion with radial arms carrying a pressure-bar and ehip-breakerthe sandard I, platze H, working in the top 0f said standard, supporb f0r said Standard, and bracing 1' 0n said support, substantially as and for thepurposes set forbh.

4. In a planing-machine, and as a means for seeuring the radial arrns which carry the pressure-bar and chip-breaker attachment, the combination of such radial arxns, having slots c therein, and provided with adjusting setscrews h, witah tahe plates H, having lugs d, substantially as described.

5. In a planing-machine, and as a means for vertically adjusting the pivotal points 0f the radial arms which carry the pressure-bar and chipbreaker attachment, the slotted Standard I, and standards J, supporbing in the same and carrying the pivobal bearings r, in combinataion witzl1 the plates H, working in the standard I, and their connections with such radial arrns, substantially as specified.

6. In a planing-machine, the combination, with the standard I, having groove n, and support J f0r said standard,provided witzh bearing r, of the plates H, haVing V-shaped peripheryand recess S, arms G, connected witah said plates, and the chip-breaker E, carried by said arrns, substantially as and f0r t;he purpose specified.

ALEXANDER O. DUMONTIER. ARTHUR PLOURDE. \Vitnesses:

H. S. SPRAGUE, E. SOULLY. 

